NEC SL1000 Features And Specifications Manual page 343

ISSUE 2.0
To Set Automatic Backlight:
1. At Multiline Terminal press Speaker key and dial Service Code (806).
2. Dial 1 to Set the Automatic Backlight.
3. Dial 00 ~ 13 to enter the Threshold.
After you dial the Threshold you will hear a "Beep" sound.
4. Press Speaker key after you dial the Threshold.
To Cancel Automatic Backlight:
1. At Multiline Terminal press Speaker key and dial Service Code (806).
2. Dial 0 to cancel the Automatic Backlight.
After you dial 0 you will hear a "Beep" sound.
3. Press Speaker key after you dial 0.
Features and Specifications Manual
SL1000/SL1100
1-333
I